pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1439-Killarney-G-24-6.ps) >>/Users/jc/w/tmp/Tune-1439-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ONeills/air/Killarney-G-24-6.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-1439-Killarney-G-24-6.abc 637 ABC music file with the extracted tune(s)
Tune-1439-Killarney-G-24-6.ps 37163 PostScript
Tune-1439-Killarney-G-24-6.txt 637 Plain-text file with the extracted tune(s)
Tune-1439-get.log 4576 Log file, useful mostly for debugging
Tune-14391-get.log 3998 Log file, useful mostly for debugging
Tune-14392-get.log 4486 Log file, useful mostly for debugging
Tune-14393-get.log 4925 Log file, useful mostly for debugging
Tune-14396-get.log 3886 Log file, useful mostly for debugging
Tune-14398-get.log 8488 Log file, useful mostly for debugging
These files should be available for 24 hours.